Question

which of the following vitamins is most likely to be deficient in a 15 - year - old boy with megaloblastic anemia?
vitamin b1
vitamin b12
vitamin c
vitamin a
vitamin e

Explanation:

Megaloblastic anemia is often caused by a deficiency of vitamin B12 or folic acid. Vitamin B12 plays a crucial role in DNA synthesis and the development of red - blood cells. Deficiency impairs normal cell division in bone marrow, leading to megaloblastic anemia.

Answer:

B. Vitamin B12